{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T08:48:07Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 19.6, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094cb-fb71-7ff1-883f-d29fad7c5ff0\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: combined diesel and diesel\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batc", "usd": 0.0, "recall": true }, "codex": { "seconds": 96.6, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094cb-fb78-7052-b99e-f12ba5960509\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: combined diesel and diesel\nRegistry id: vr.tr.combined-diesel-and-diesel\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames fol" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:56:03+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:25+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q1023956", "registryId": "vr.tr.combined-diesel-and-diesel", "name": "combined diesel and diesel", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q1023956/", "model": { "registry_id": "vr.tr.combined-diesel-and-diesel", "name": "combined diesel and diesel", "purpose": "Enable an agent to recognise combined diesel and diesel propulsion, assess its available operating modes, and identify actions permitted by its mechanical and control constraints.", "definition": "Combined diesel and diesel (CODAD) is a marine propulsion arrangement in which two or more diesel engines can transmit mechanical power simultaneously through combining gearing to a common propeller shaft, with fewer engines operating when less power is required.", "scope_statement": "This model owns the CODAD propulsion architecture registered as vr.tr.combined-diesel-and-diesel in PHY / PHY.OBJ: multiple diesel engines capable of individually or simultaneously supplying a common propeller shaft through combining gearing, including the interfaces and evidence needed to assess an installation. The defining arrangement is described by [RENK](https://www.renk.com/en/glossary/codad).", "in_scope": [ "Diesel-engine grouping and mechanical power paths to shared shaft outputs", "Combining gears, coupling arrangements and engine isolation capabilities", "Permitted engine combinations, load sharing and mode transitions", "Mode-dependent shaft power, operating limits and fuel-use evidence", "Propulsion availability, shared dependencies and maintenance restrictions" ], "out_of_scope": [ "Internal design and overhaul procedures of individual diesel engines", "Whole-vessel hull resistance, navigation and mission planning", "Detailed propeller design and hydrodynamic optimisation", "Diesel-electric generation and electric propulsion architectures", "Combined propulsion architectures incorporating gas turbines", "Product catalogues and individual vessel identity records" ], "distinguishing_features": [ "At least two diesel engines have mechanical paths capable of contributing power simultaneously to a common propeller shaft.", "The arrangement supports individual-engine operation as well as combined operation; two mutually exclusive engine inputs alone do not establish CODAD.", "Two diesel engines driving separate shafts without a combining path do not establish CODAD.", "The defining power combination occurs mechanically through gearing, rather than solely through generators and an electrical bus.", "A gas turbine contributing to the same combined drive requires classification beyond the diesel-only CODAD subsystem." ], "characteristics": [ { "name": "Engine-to-shaft topology", "kind": "relation", "unit_or_values": "Engine → coupling → gear input → shaft output", "why_it_matters": "Establishes whether engines actually combine power and identifies shared mechanical dependencies." }, { "name": "Diesel inputs per combining group", "kind": "measurement", "unit_or_values": "Count of diesel engines", "why_it_matters": "Distinguishes engines available to one combined drive from total engines aboard." }, { "name": "Permitted engine combinations", "kind": "category", "unit_or_values": "Documented sets of engaged engines for each shaft output", "why_it_matters": "Prevents assuming that every physically connected combination is approved." }, { "name": "Current drive configuration", "kind": "state", "unit_or_values": "Stopped, individual-engine, combined, transitioning, degraded, tripped, unknown", "why_it_matters": "Connects architecture to present propulsion capability." }, { "name": "Available shaft power by mode", "kind": "measurement", "unit_or_values": "kW at specified shaft speed and operating conditions", "why_it_matters": "Separates usable output from the sum of engine nameplate ratings." }, { "name": "Gear-input and shaft limits", "kind": "measurement", "unit_or_values": "Torque in N·m; rotational speed in rpm; duration in s or h", "why_it_matters": "Defines constraints on combined loading and transient operation." }, { "name": "Engine load distribution", "kind": "measurement", "unit_or_values": "kW and percentage of applicable rating per engaged engine", "why_it_matters": "Exposes unequal loading and mode-dependent engine restrictions." }, { "name": "Coupling availability", "kind": "state", "unit_or_values": "Engaged, disengaged, transitioning, failed, isolated, unknown", "why_it_matters": "Determines whether an engine can contribute power or be mechanically separated." }, { "name": "Fuel use at matched shaft demand", "kind": "measurement", "unit_or_values": "kg/h at specified shaft kW, rpm and ambient conditions", "why_it_matters": "Supports evidence-based comparison of individual and combined operation." }, { "name": "Approved operating envelope", "kind": "relation", "unit_or_values": "Installation → applicable manuals, class approvals and acceptance records", "why_it_matters": "Provides authority for limits and actions without assuming a universal CODAD standard." } ], "affordances": [ "Classify a documented propulsion arrangement against CODAD boundary tests.", "Trace which diesel engines can supply each shaft individually and together.", "Compare permitted engine combinations for a specified shaft-power demand.", "Assess whether a requested mode transition satisfies documented prerequisites.", "Estimate remaining propulsion capability after an engine or shared-component outage.", "Identify evidence and isolation requirements before recommending maintenance or return to service." ], "agent_conduct": { "may": [ "Explain the propulsion arrangement and identify ships that use it from documented sources.", "Report the state and faults of a ship's diesel plant for its operator.", "Operate engines and gearboxes the agent is authorized to control." ], "must_not": [ "Start, stop or couple engines without the engineer's authority.", "Override alarms or protective trips in the engine room.", "Misstate the propulsion type of a ship in records." ], "requires_human": [ "Changing propulsion modes during manoeuvres in confined waters.", "Shutting down propulsion at sea." ] }, "ethics": { "considerations": [ "Propulsion failure at sea endangers crews and other ships.", "Diesel emissions affect air quality in ports." ], "affected_parties": [ "Ship crews", "Other ships nearby", "Port communities" ] }, "owners": { "steward": "The ship operator; the chief engineer answers for the plant on board.", "master_systems": [] }, "visual_identification": [ "Several diesel engines connected through a combining gearbox to the shafts.", "Funnel exhaust arrangements for multiple diesels." ], "failure_modes_and_hazards": [ "Engine room fire from fuel or lubricant leaks.", "Gearbox or clutch failure leading to loss of propulsion.", "Noise and exhaust exposure for engine room crews." ], "standards_and_regulation": [ "Convention on the International Regulations for Preventing Collisions at Sea (COLREGs), International Maritime Organization." ], "what_it_is_for": [ "Combined diesel and diesel propulsion is used in marine vessels where multiple diesel engines supply mechanical power to a common propeller shaft.", "It allows available propulsion power to match operating demand by changing the number of connected engines.", "The arrangement is relevant when assessing machinery layout, operating flexibility and propulsion availability." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q1023956: combined diesel and diesel", "url": "https://www.wikidata.org/wiki/Q1023956", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Combined diesel and diesel", "url": "https://en.wikipedia.org/wiki/Combined_diesel_and_diesel", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "combined-drive-identity", "name": "Combined drive identity", "description": "Recognise CODAD through actual engine-to-shaft connections.", "rationale": "Engine count alone cannot distinguish CODAD from independent diesel drives.", "layers": [ { "id": "power-path-topology", "name": "Power-path topology", "description": "Describe where diesel outputs converge.", "findings": [ { "id": "shared-shaft-combination", "name": "Shared-shaft combination", "description": "Record evidence that multiple diesel inputs can deliver torque concurrently to a common shaft.", "questions": [ { "text": "Which diesel engines connect to each combining gearbox and shaft output?", "kind": "definition", "id": "shared-shaft-combination-q01" }, { "text": "Which drawing or manufacturer record demonstrates simultaneous power contribution?", "kind": "provenance", "id": "shared-shaft-combination-q02" } ] } ] }, { "id": "architecture-boundaries", "name": "Architecture boundaries", "description": "Separate the CODAD subsystem from neighbouring propulsion arrangements.", "findings": [ { "id": "classification-boundary", "name": "Classification boundary", "description": "Identify whether the label describes an entire propulsion plant or a mechanically combined diesel subsystem.", "questions": [ { "text": "Can the engines power the shared output individually as well as simultaneously?", "kind": "boundary", "id": "classification-boundary-q01" }, { "text": "Do electrical drives, gas turbines or independent shafts require a separate surrounding architecture model?", "kind": "boundary", "id": "classification-boundary-q02" } ] } ] } ] }, { "id": "torque-combination-and-isolation", "name": "Torque combination and isolation", "description": "Describe the mechanical conditions for joining and separating diesel inputs.", "rationale": "Useful combined power depends on transmission limits and the ability to manage individual inputs.", "layers": [ { "id": "combining-gear-capability", "name": "Combining-gear capability", "description": "Relate engine ratings to admissible input and output loading.", "findings": [ { "id": "gear-loading-envelope", "name": "Gear-loading envelope", "description": "Record ratios and torque-speed limits for each approved engine combination.", "questions": [ { "text": "What ratios relate each diesel input speed to shaft speed?", "kind": "measurement", "id": "gear-loading-envelope-q01" }, { "text": "What input, output and transient limits constrain simultaneous engine loading?", "kind": "measurement", "id": "gear-loading-envelope-q02" } ] } ] }, { "id": "input-separation", "name": "Input separation", "description": "Describe coupling mechanisms and isolation effectiveness.", "findings": [ { "id": "engine-disconnection", "name": "Engine disconnection", "description": "Record how an inactive or failed diesel is separated from the operating drivetrain.", "questions": [ { "text": "Which clutch, coupling or other mechanism connects and disconnects each diesel input?", "kind": "definition", "id": "engine-disconnection-q01" }, { "text": "Under what documented conditions can an input be isolated, and can the shared drivetrain back-drive it?", "kind": "action", "id": "engine-disconnection-q02" } ] } ] } ] }, { "id": "mode-control-and-transitions", "name": "Mode control and transitions", "description": "Represent permitted engine combinations and their controlled transitions.", "rationale": "Physical connectivity does not establish permission to engage an engine or increase combined load.", "layers": [ { "id": "operating-mode-state", "name": "Operating-mode state", "description": "Distinguish requested propulsion mode from confirmed mechanical state.", "findings": [ { "id": "confirmed-engine-combination", "name": "Confirmed engine combination", "description": "Record active engines, coupling feedback and load-sharing status together.", "questions": [ { "text": "Which combinations are approved, and which combination is currently confirmed by engine and coupling feedback?", "kind": "definition", "id": "confirmed-engine-combination-q01" }, { "text": "How is load allocated between engaged engines, and what deviation is permitted?", "kind": "measurement", "id": "confirmed-engine-combination-q02" } ] } ] }, { "id": "engagement-and-disengagement", "name": "Engagement and disengagement", "description": "Capture prerequisites and authority for changing diesel participation.", "findings": [ { "id": "transition-permissives", "name": "Transition permissives", "description": "Associate each mode change with installation-specific speed, load, service and control requirements.", "questions": [ { "text": "What speed matching, load reduction and auxiliary-service conditions must be met before engagement or disengagement?", "kind": "action", "id": "transition-permissives-q01" }, { "text": "Which interlocks, control station and abort conditions govern the requested transition?", "kind": "action", "id": "transition-permissives-q02" } ] } ] } ] }, { "id": "mode-dependent-performance", "name": "Mode-dependent performance", "description": "Assess useful shaft output and fuel use for each diesel combination.", "rationale": "The value of changing engine count depends on measured demand, losses and operating restrictions.", "layers": [ { "id": "deliverable-shaft-output", "name": "Deliverable shaft output", "description": "Resolve usable output at the common shaft.", "findings": [ { "id": "power-by-engine-combination", "name": "Power by engine combination", "description": "Record continuous and time-limited output without equating installed engine power with delivered shaft power.", "questions": [ { "text": "What shaft power and speed are available continuously and temporarily in each approved combination?", "kind": "measurement", "id": "power-by-engine-combination-q01" }, { "text": "Which transmission losses, environmental deratings and propulsor constraints qualify those values?", "kind": "boundary", "id": "power-by-engine-combination-q02" } ] } ] }, { "id": "fuel-and-load-selection", "name": "Fuel and load selection", "description": "Compare engine combinations at equivalent useful output.", "findings": [ { "id": "supported-mode-preference", "name": "Supported mode preference", "description": "Require installation evidence before preferring fewer or more running engines for a given demand.", "questions": [ { "text": "What measured fuel rates distinguish individual and combined operation at matched shaft power and speed?", "kind": "measurement", "id": "supported-mode-preference-q01" }, { "text": "Which minimum-load, transient-response or reserve-power requirements constrain the preferred combination?", "kind": "action", "id": "supported-mode-preference-q02" } ] } ] } ] }, { "id": "degraded-operation-and-assurance", "name": "Degraded operation and assurance", "description": "Determine what propulsion remains available and what evidence permits continued operation.", "rationale": "Multiple diesels provide alternative inputs, but shared gearing and services can still disable the combined drive.", "layers": [ { "id": "failure-propagation", "name": "Failure propagation", "description": "Separate loss of one diesel input from loss of a shared drive dependency.", "findings": [ { "id": "remaining-propulsion-paths", "name": "Remaining propulsion paths", "description": "Map engine, coupling, gearbox and auxiliary-service failures to surviving permitted modes.", "questions": [ { "text": "After a specified engine or coupling failure, which power paths remain usable and at what limits?", "kind": "action", "id": "remaining-propulsion-paths-q01" }, { "text": "Which shared lubrication, cooling, fuel, control or gearbox dependencies can disable all inputs to the shaft?", "kind": "boundary", "id": "remaining-propulsion-paths-q02" } ] } ] }, { "id": "maintenance-and-operating-authority", "name": "Maintenance and operating authority", "description": "Link condition evidence and isolation status to operating permission.", "findings": [ { "id": "condition-based-restrictions", "name": "Condition-based restrictions", "description": "Record combining-gear and coupling condition evidence, applicable restrictions and verified maintenance boundaries.", "questions": [ { "text": "Which oil condition, temperature, vibration or clutch-slip observations trigger restrictions under the applicable documentation?", "kind": "measurement", "id": "condition-based-restrictions-q01" }, { "text": "What verified isolation prevents shared-shaft rotation or auxiliary energy from reaching equipment under maintenance?", "kind": "action", "id": "condition-based-restrictions-q02" }, { "text": "Which issuing bodies, approval records and acceptance tests establish the installation's permitted modes and return-to-service criteria?", "kind": "provenance", "id": "condition-based-restrictions-q03" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This describes a propulsion architecture, not a single machine model or installed unit.", "Engine counts, power ratings, clutch arrangements and achievable redundancy depend on the installation; no universal capacity range is asserted.", "Applicable classification and statutory requirements depend on vessel type and jurisdiction; no specific standards were verified for this recall-only description." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of combined diesel and diesel this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Marine propulsion configuration abbreviation", "value_or_pattern": "CODAD", "note": "Identifies a propulsion architecture, not a particular engine model or vessel." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of combined diesel and diesel this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Propulsion of frigates, corvettes and other diesel-powered vessels.", "Cruising with a subset of engines engaged and using additional engines for higher propulsion power.", "Providing multiple prime movers so some engine failures need not eliminate all propulsion, subject to gearbox and shaft arrangements." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of combined diesel and diesel this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Combining gearbox or shaft failure can disable propulsion despite having multiple engines.", "Clutch faults or incorrect engagement can damage the drivetrain.", "Poor load sharing can overload an individual engine or transmission component.", "Torsional vibration can cause fatigue damage in shafts, gears and couplings.", "Fuel or lubricating-oil leaks near hot engine surfaces can cause machinery-space fires." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of combined diesel and diesel this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Combined diesel or diesel (CODO D)", "difference": "Alternative diesel engines drive the shaft separately; CODAD permits their power to be combined simultaneously." }, { "name": "Combined diesel and gas (CODAG)", "difference": "Combines diesel-engine and gas-turbine power; CODAD combines power from diesel engines." }, { "name": "Combined diesel or gas (CODOG)", "difference": "Uses diesel engines or gas turbines as alternative mechanical power sources rather than combining multiple diesel engines." }, { "name": "Diesel-electric propulsion", "difference": "Diesel engines generate electricity for propulsion motors rather than transmitting propulsion power mechanically through combining gearing." }, { "name": "Twin-shaft diesel propulsion", "difference": "Describes the number of shafts; it is CODAD only if multiple diesel engines can combine power onto a common shaft." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of combined diesel and diesel this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own CODAD or the encompassing combined mechanical diesel architecture, requiring this registry entry to link to it?", "How should authoritative sources delimit CODAD variants with more than two engines, cross-connected shafts or additional propulsion technologies?", "Which manufacturer manuals and class-approved installation records establish actual coupling designs, mode combinations and transition permissives?", "What representative measured shaft-power, fuel-use, mass and dimensional ranges can be supported without implying universal CODAD ratings?", "Which class, flag-state and vessel-service requirements apply to each installation, and what evidence establishes its degraded-operation limits?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 15, "questions": 26 } }